Rush Limbaugh has answered - it's the rich liberals who own the banks and run the government, and of course run the media, and they don't care about you - they just want to give everything away to illegal immigrants and gays and communists and so on.

If you are giving a graduate course you don't try to impress the students with oratory, you try to challenge them, get them to question you.

Evolutionary theory has nothing to say, in general, as to whether cheating is more advantageous than cooperating. There are many circumstances in which the contrary would be true, and empirical evidence, though it exists, has little bearing on real situations.

In general, the attitude towards Nazi Germany was not that hostile, especially if you look at the U.S. State Department reports. In 1937 the State Department was describing Adolf Hitler as a "moderate" who was holding off the forces of the right and the left.

On abortion: We are talking about ambiguous issues of a complicated kind where you have to balance conflicting interests and concerns.

Language etches the grooves through which your thoughts must flow.

There is little doubt that a significant part of any serious solution will require advances of technology, but that can only be part of the solution. Other major changes are necessary.